312200400 has 120 divisors (see below), whose sum is σ = 1052794720. Its totient is φ = 78865920.

The previous prime is 312200389. The next prime is 312200423. The reversal of 312200400 is 4002213.

312200400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15954 + ... + 29646.

Almost surely, 2^312200400 is an apocalyptic number.

312200400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312200400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526397360).

312200400 is an abundant number, since it is smaller than the sum of its proper divisors (740594320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312200400 is a wasteful number, since it uses less digits than its factorization.

312200400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13733 (or 13722 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 312200400 is about 17669.1935299832. The cubic root of 312200400 is about 678.3874709364.

Adding to 312200400 its reverse (4002213), we get a palindrome (316202613).

The spelling of 312200400 in words is "three hundred twelve million, two hundred thousand, four hundred".